Which movement is associated with the sagittal plane?

The movement associated with the sagittal plane is flexion. The sagittal plane divides the body into right and left sections and movements that occur within this plane involve forward and backward motions. Flexion refers specifically to the action of decreasing the angle between two body parts, such as bending the elbow or knee, which moves the body segments forward in relation to one another. This motion is characteristic of the sagittal plane, as it involves the body moving in a front-to-back manner.

Other movements listed, such as abduction and adduction, are primarily associated with the frontal plane, which divides the body into anterior (front) and posterior (back) sections, and involve side-to-side movements. Rotation is associated with the transverse plane, which divides the body into superior (upper) and inferior (lower) parts and involves turning movements around a vertical axis. Thus, flexion distinctly aligns with the actions performed in the sagittal plane.